mirror of
https://github.com/servalproject/serval-dna.git
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102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
/*
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Serval DNA packet radio interface
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Copyright (C) 2013 Serval Project, Inc.
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Copyright (C) 2013 Paul Gardner-Stephen
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "serval.h"
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#include "conf.h"
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#include <termios.h>
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int overlay_packetradio_setup_port(overlay_interface *interface)
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{
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struct termios t;
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if (tcgetattr(interface->alarm.poll.fd, &t))
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WHY_perror("Failed to get terminal parameters");
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speed_t baud_rate;
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switch(interface->uartbps){
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case 0: baud_rate = B0; break;
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case 50: baud_rate = B50; break;
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case 75: baud_rate = B75; break;
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case 110: baud_rate = B110; break;
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case 134: baud_rate = B134; break;
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case 150: baud_rate = B150; break;
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case 200: baud_rate = B200; break;
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case 300: baud_rate = B300; break;
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case 600: baud_rate = B600; break;
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case 1200: baud_rate = B1200; break;
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case 1800: baud_rate = B1800; break;
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case 2400: baud_rate = B2400; break;
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case 4800: baud_rate = B4800; break;
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case 9600: baud_rate = B9600; break;
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case 19200: baud_rate = B19200; break;
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case 38400: baud_rate = B38400; break;
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default:
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case 57600: baud_rate = B57600; break;
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case 115200: baud_rate = B115200; break;
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case 230400: baud_rate = B230400; break;
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}
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if (cfsetospeed(&t, baud_rate))
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WHY_perror("Failed to set output baud rate");
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if (cfsetispeed(&t, baud_rate))
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WHY_perror("Failed to set input baud rate");
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// 8N1
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t.c_cflag &= ~PARENB;
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t.c_cflag &= ~CSTOPB;
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t.c_cflag &= ~CSIZE;
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t.c_cflag |= CS8;
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t.c_lflag &= ~(ICANON | ISIG | IEXTEN | ECHO | ECHOE);
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/* Noncanonical mode, disable signals, extended
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input processing, and software flow control and echoing */
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t.c_iflag &= ~(BRKINT | ICRNL | IGNBRK | IGNCR | INLCR |
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INPCK | ISTRIP | IXON | IXOFF | IXANY | PARMRK);
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/* Disable special handling of CR, NL, and BREAK.
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No 8th-bit stripping or parity error handling.
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Disable START/STOP output flow control. */
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// Enable/disable CTS/RTS flow control
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#ifndef CNEW_RTSCTS
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if (interface->ctsrts) t.c_cflag |= CRTSCTS;
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else t.c_cflag &= ~CRTSCTS;
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#else
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if (interface->ctsrts) t.c_cflag |= CNEW_RTSCTS;
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else t.c_cflag &= ~CNEW_RTSCTS;
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#endif
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// no output processing
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t.c_oflag &= ~OPOST;
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if (tcsetattr(interface->alarm.poll.fd, TCSANOW, &t))
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WHY_perror("Failed to set terminal parameters");
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if (config.debug.packetradio) {
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tcgetattr(interface->alarm.poll.fd, &t);
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int in_speed=cfgetispeed(&t);
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int out_speed=cfgetospeed(&t);
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DEBUGF("uart speed reported as %d/%d",in_speed,out_speed);
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}
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set_nonblock(interface->alarm.poll.fd);
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return 0;
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}
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